<!--04-关系运算.html-->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>04-关系运算</title>
    <script type="text/javascript">
        var a = 10;
        var b = "10"
        alert(a == b);  // true
        alert(a === b);  // false
    </script>
</head>
<body>
</body>
</html>